Comparisons between observations and numerical results for the background solar wind. Panel a displays the solar eclipse image of 2 July 2019 (Copyright: 2019 Miloslav Druckmüller, Peter Aniol), corresponding to a minimum of solar activity. Panels b and c correspond to the typical field lines and radial velocity distribution in the meridian plane, respectively. Panel d visualizes the heliospheric current sheet depicted by the isosurface of B_r = 0.